| 郑忠林,刘凯,王鹏,樊忠平,任涛,王超.南秦岭池沟斑岩型铜矿岩浆活动与成矿关系探讨[J].矿产勘查,2019,(5):1098-1104 |
| 南秦岭池沟斑岩型铜矿岩浆活动与成矿关系探讨 |
| Discussion on the relationship between magmatic activity and metallogenesis in the Chi Gou porphyry copper deposit, southern Qinling Mountains |
| 投稿时间：2018-10-09 |
| DOI： |
| 中文关键词: 斑岩型铜矿 岩浆活动 流体特征 南秦岭 |
| 英文关键词: porphyry copper deposits, magmatic activities, fluid characteristics, southern Qinling |
| 基金项目:中国地质调查局地质矿产调查评价专项(编号:1212011120574)资助。 |
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| 中文摘要: |
| 池沟地区小斑岩体广泛发育,岩体多呈北东向展布的串珠状小岩株或岩枝产出,属燕山期高钾钙碱性系列I型花岗岩。池沟斑岩型铜钼矿(化)体产于燕山期中酸性岩体内外接触带中,池沟区内岩体锆石U-Pb年龄为140～148 Ma,与矿石辉钼矿的Re-Os年龄一致, 成岩与成矿年龄一致,均形成于侏罗纪晚期。池沟矿区成矿物质主要来源于侵入岩浆,铜矿体主要赋存于斑岩体及其与围岩接触带上,远离岩体,矿化减弱,矿体产状多受岩体与围岩接触面控制。近年来,通过对区内池沟岩体的研究,应进一步查明成矿主岩体的分布形态以及矿化富集规律,同时开展新的地质找矿方法,为柞—山盆地寻找铜矿提供新的思路。通过钻孔深部工程,在岩体内外接触带上寻找矿化富集部位应有较好的找矿前景。 |
| 英文摘要: |
| The small porphyry in the Igou area is widely developed. The rock mass is mostly produced by beaded small rock series or rock branches distributed in the northeast direction. It belongs to the Yanshanian high-potassium-calcium-alkaline series I type granite. The Igloo porphyry copper-molybdenum ore body is produced in the intrusion zone of the Yanshanian mid-acid rock. The zircon U-Pb age of the rock mass in the Ikegou area is 140-148 Ma, and the re-mineral molybdenum Re-Os age is the same, and the diagenesis and mineralization ages are the same, both formed in the late Jurassic. The ore-forming materials in the Igou mining area are mainly derived from intrusive magma. The copper ore body mainly exists in the porphyry body and its contact with the surrounding rock. It is far away from the rock mass, the mineralization is weakened, and the ore body is mostly affected by the rock mass and surrounding rock. Contact surface control. In recent years, through the study of the gully rock mass in the area, the distribution pattern of the main ore-forming rock mass and the mineralization enrichment law should be further investigated, and a new geological prospecting method should be carried out to find copper mines for the Yan-Mountain Basin. Provide new ideas. Through the deep drilling project, it is necessary to find a mineralization and enrichment site on the contact zone inside and outside the rock. |
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